Definition: "Nestle" and "nesting" are common words, but "nstnspare3," referring to a specific type of nestling bird, is a name in English literature often used for describing this kind of avian behavior. Definition: Nestling birds lay their eggs inside holes dug by other birds. This process of nesting can take several months and involves the feeding of young, care for offspring, and sometimes the guarding of nests from predators. "Nestle" is a name that sounds like "nesting," as in "the nestling bird is laying his egg."